Ion sphere model for Yukawa systems (dusty plasmas)

Abstract

Application of the ion sphere model (ISM), well known in the context of the one-component-plasma, to estimate thermodynamic properties of model Yukawa systems is discussed. It is shown that the ISM approximation provides fairly good estimate of the internal energy of the strongly coupled Yukawa systems, in both fluid and solid phases. Simple expressions for the excess pressure and isothermal compressibility are derived, which can be particularly useful in connection to wave phenomena in strongly coupled dusty plasmas. It is also shown that in the regime of strong screening a simple consideration of neighboring particles interactions can be sufficient to obtain quite accurate estimates of thermodynamic properties of Yukawa systems.

Physics of Plasmas (December 2014)

References in corpus (3)

• Dynamical correlations and collective excitations of Yukawa liquids
• Three dimensional complex plasma structures in a combined radio frequency and direct current discharge
• The FCC-BCC-Fluid triple point for model pair interactions with variable softness

Cited by in corpus (14)

• Fluid approach to evaluate sound velocity in Yukawa systems (complex plasmas)
• Practical expressions for the internal energy and pressure of Yukawa fluids
• Practical thermodynamics of Yukawa systems at strong coupling
• Onset of transverse (shear) waves in strongly-coupled Yukawa fluids
• Isomorph-based empirically modified hypernetted-chain approach for strongly coupled Yukawa one-component plasmas
• Vibrational model of thermal conduction for fluids with soft interactions
• Practical dispersion relations for strongly coupled plasma fluids
• Unified description of sound velocities in strongly coupled Yukawa systems of different spatial dimensionality
• Dispersion relations of Yukawa fluids at weak and moderate coupling
• Isomorph invariance and thermodynamics of repulsive dense bi-Yukawa one-component plasmas
• Instantaneous shear modulus of Yukawa fluids across coupling regimes
• Capacitively-coupled rf discharge with a large amount of microparticles: spatiotemporal emission pattern and microparticle arrangement
• Self-Consistent Relaxation Theory of Collective Ion Dynamics in Yukawa One-Component Plasmas under Intermediate Screening Regimes
• Elastic properties of Yukawa crystals